Answer:
24pi or 75.4
Explanation:
The formula for circumference of a circle is pi(d) or pi(2)(r). Plug in 12 for the radius.
pi(2)(12)
Multiply
pi(24)
You can leave it as 24pi or if multiply pi if your teacher says to.
24pi=75.4
The circumference of the circle is 24pi or 75.4